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I was not clear, they corrected boats with the 5 blade, mine was not one of those lucky boats... I have heard people using from 17 inch to 22 inch. I am on this full time and I will post any results I get. I appreciate all of the input. Beekeepergreg, if you are ever in the Keys let me know...

Getting frustrated Still hoping someone reads this thread and has advice. I am getting nowhere. When I lift the back hatch it is very evident the vibration is right where the prop is. Clearance is a good inch plus. Prop looks perfect but I will be pulling it to have it looked at. Anyone...

Curious Glennl, Is your 4 blade a 21x21? What year is your Pilot 30? I am looking into this more now, need a solution...

Still a problem... Any luck Glennl?

All good advice, however these boats were known for vibration and it was corrected under warranty with a 5 blade prop. With the company out of business, it is very hard to find our what the prop was...

Again, great idea, but... Unfortunately, Mainship sold to a new company that will not support old boats. No help in the owners forum... That is why I am trying this...

All good points, but this model is well known for a mysterious vibration at high RPM's that was addressed under warranty with a 5 blade prop. Looking into other possibilities as well, however no luck there so far.

Excellent advice. Thank you. Has anyone heard of Mainship addressing this problem with a 5 blade prop?

We have just purchased this boat and are dealing with vibration at top speeds. We just got hit with Hurricane Irma so I am less than excited to get into the canal and none of the marinas are pulling boats out in my area (all are closed). I have a Yanmar 240 (previous owner had the engine...

Great news! - Solved! The GFI on the port side was faulty, replacing it gave me power in both outlets on that side. The Starboard side was tricky. i figured there had to be another GFI so I went looking. In the head, inside the mirrored compartment behind the faucet, way up high towards the...

Great info Great info, let me go try that...

Just to recap, two of the outlets did not work when we bought her. Once was a GFI (that resetting does not help). The third (on the Starboard side of the cabin) did work. Seems unlikely that two would be burned out somewhere (the boat is lightly used and in spectacular condition) and then the...

Nope, not GFI. Must be a breaker elsewhere...

I recently purchased a Pilot 30 and just getting to know her. So far she is fantastic, and even made it through a direct hit from Hurricane Irma. Two of the 110v outlets do not work. I hooked up a portable air conditioner to the third while I was working on the clogged sea strainer (our...

I wonder how it was "addressed and repaired under warranty by Mainship"

Mine being a 1999 did not have the tunnel. I think my issue has more to do with this; "In its first year of production the Pilot™ 30 encountered noise and vibration problems particularly on boats equipped with larger Yanmar engines. The cause seemed to be insufficient propeller tip clearance...

Same issue I also have a 1999 Pilot 30, same vibration at higher RPM's but with a Yanmar 240hp. Would love to see a reply to this post.